大虾求解！！！！！
数据段，堆栈段的存放情况，标志位是多少?data segment
org 1000h
block db 48h,8dh
resul db ?
data ends
stack segment para stack'stack'
db 64 dup (?)
stack ends
code segment
assume cs:code,ss:stack,ds:data
start proc
begin:mov ax,data
mov ds,ax
mov sp,4000h
lea bx,block
mov al,
sub al,
push ax
pushf
call sub1
popf
pop ax
mov ,al
hlt
endp
sub1 proc
add al,al
ret
sub1 endp
code ends
end begin
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